The actual material being printed on is usually paper which is out of wood, how ever the printer may be made out of metal, and I am confused on which one you are asking about.
It would only be one the top
Answer:
It makes this old man and his surroundings grey. This creates contrast.
Hi there!
There are 7 elements of art, and 8 principles of art. There are really a lot of different ways you can find them in this painting!
First, what stands out to me the most, and probably you as well, is the color. The different hues and intensities really make up this art work. With that being said- these colors are all cool toned, contributing to the interpretation of this painting. Most likely included to give a calming and/or soothing feel. Next, I would include form. Form is the element of 3D and volume. You can tell how this is used by the beams or pillars in the background of the art to give an enclosed type feel around the flowers. Last is harmony. This principle is arguably one of the most important. It allows each element/ principle to work smoothly together in order to achieve similarity and highlight accents.
Sorry this was so long, but hope it helped! :)